Improvement in stump-extractors



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Mam 56m f% AM. P'IOTU-LITHUA. C0. N.Y. (OSBRNE'S PROCES NiTED STATESFrise@ AT1-DNT ISAAC HICKS, OF` HARTFORD, WISCONSIN, ASSIGNOR TO HIMSELFAND LEWIS E. PECK, OF SAME PLACE.

llVlPROVElVlENT IN STUMP-EXTRACTORS. I

Specification forming part of Letters Patent No. 36,585, dated September30, 1862.

To @ZZ whom it may concern.-

Be it known that I, ISAAC HICKS, of Hartford, in the county ofWashington and State of Visconsin, have invented a new and ImprovedMachine for Extracting Stumps; and I do hereby declare that thefollowing is a full, clear, and eXact description of the same, refer- Yence being had tothe accompanying drawings,

stumps from the earth-one that may be oper ated with facility andreadily moved from place to place in order to be applied to its work.

To this end the invention consistsin the ernployment or use of twolevers, or, rather-,a conipound lever, in connection -with a lifting-barand a fulcrum-supporting bar, all applied to a mounted frame andarranged as hereinafter fully shown and described.

The invention also consists in a novel arrangement or application of aback pair of Wheels to the frame, whereby the latter, when the machineis tobeused orappliedtoits work, may be made to rest upon the ground andthe wheels and axle not allowed to be subjected to any strain or tosustain any weight while the machine is at work.

A represents a frame, which is composed of two parallel sill-pieces, au,having each two uprights, b b, attached,the upper ends ofwhich areconnected by cross bars c c. B is a bar, which is slightly inclined froma horizontal position, its front end being the lowest and resting uponthe bolster d' on the axle e of a pair of wheels,ff. The back end of thebai-B rests upon the top of the frame A, and it is chamfered or beveledoff at its upper surface and back end, as shown in'Fig. l at g. In theupper surface of the bar B there is fitted a plate, lz, which is at theinner end of the bevel gand forms the fulcruxn of a lever, C, which isdi rectly over the bar B, and is beveled at its under side directly overthe bevelg ofthe bar B, as shown at t' in Fig. l. The bar B and lever Chave slots j made through 'them at their beveled portions, and throughthese slots a lifting bar, D, passes, and is retained by pins k,whichwill be presently described. Inthe bar B there is secured by a pin, Z,the lower end of a perforated bar, E,which passes up through a mortise,m, in the lever C, and in the upper surface of the lever C, at its innerend, there is fitted a metal plate, n, which serves as abearing for alever, E, through which the perforated bar E also passes.

The operation is as follows: The lower end of the lifting-bar D isattached t0 the stump to be extracted and the short arm of the lever Cis forced down and a pin, lc, passed through the bar D in contact withthe upper surface of the lever C. The inner end of the lever E is thenforced down and a pin, o, passed through it in contact with the uppersurface o f lever E; The outer end of the lever E is then pressed down,and the pin o serves as afulcrum for it. This movement of the leverforces down the inner end or longer arm of the lever C, and its shorterarm is of course elevated and the drawbar D raised to a certain extent.In order to hold the lifting-bar, a pin, o, is passed through the bar E,directly over lever C, and a pin, 7c, is passed through a lifting bar,D, directly over the bar B. The pin k, which passes through the bar I)over levewC, is then withdrawn,and also the pin o,which passes throughthe bar E over the lever C. The short arm of lever C is then againforced down and a pin, k, passed through D above the short arm of leverC, and the inner end of the lever Fis also forced down and a pin, o,passed through the bar E directly over F, which is again forced down atits outer end to actuate the lever C and further elevate the lifting-barD. This operationof the levers C E is repeated until the stu mp isextracted. By this arrangement a single person may operate the machine,and each bar D E has two pins, 7c 7c o o, attached to it by a cord forthe purpose of being passedl ment. The device is moved about from placeto place on four wheels, one pair of which,ff, have been previouslyalluded to, and, being arranged in a way common to all Wheel-vehicles,do not require a minute description. The application, however, of theback wheels, G G, is peculiar, and forms an essential feature of theinvention. The wheels G Gare attached to an axle, H, which has a shortperch' or reach, I, yconnected to it, the front end of which is fittedon a guide-rod, J, which is at the under side of the bar B. The perch orreach I is allowed to slidel freely back and forth on the rod J.(SeeFig. l.) y

K K represent two levers` which are secure by fulcrum-pinspp in the backor outer uprights, b b, ofthe frame A. These leverspass through slots ormortises in the nprights b b and iit in grooves c c' in the uppersurface of the axle H of the wheels G G. To each lever K there isattached a hook, L, which ext-ends downward.

Vhen the machine is to be mounted in order to be drawn from place toplace, the inner ends of the levers K K are depressed or forced down andthe hooks L L are inserted in holes in the inner ends of the sill-piecesa ct, as shown in Fig'. 1, and the frame A will consequently besupported by the axle H, the aXle bearing against the inner uprights, bb.

When the machine is to be applied to its work, the hooks L L aredetached from the ends of the side pieces, a a, and the frame A is letdown upon the ground. The raising and lowering of the frame A can beeffected by one person.

This machine may be very cheaply con. structed, and it contains no partswhich are liable to get out of repair, and when repairing is necessaryit can be performed by almost any one familiar with mechanics tools. l

Having thus described my invention,what I claim as new, and desire tosecure by Letters Patent, is-

l. The combination of the bar B, levers C F, one or both, liftingbar D,and fulcrum-supporting bar E, all arranged to operate as and for thepurpose herein set forth.

2. The applying of the wheels G G to the frame A of the machine throughthe medium of the levers K K and hooks L L, arranged with the axle H andsill -pieees a a of the frame, as and for the purposeherein specified.

ISAAC HICKS.

Witnesses:

MERRITT BRowNELL, R. S. KNEELAND.

